The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 1988
Filed:
Nov. 12, 1986
Applicant:
Inventors:
Joseph Broquet, Wahlen, CH;
Raymond Schoenenberger, Rosenau, FR;
Assignee:
Hatebur Umformmaschinen AG, , CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
72481 ; 72472 ; 72404 ; 72446 ; 72354 ;
Abstract
In a multi-stage forming machine, a die-change device, for male dies in a male-die block has a mounting plate for receiving a clamping face of the male-die block on one side. Bayonet fasteners on hollow pistons in the mounting plate then engage the male dies, and a pressure medium then moves the hollow pistons to move the male dies against thrust pieces displacably in the hollow pistons and the thrust pieces against an adjusting wedge on the opposite side of the mounting plate.